Question about 2003 Chevrolet Avalanche

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Air condition problem

My ac smalls bad when it is first turned on.

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Replaced the a\cfilter

Posted on Jul 02, 2008

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It might be because recent owners smoked cigarettes in the vehicle. Also, the AC vents may have a little mold which can cause a bad smell until the air flows through.

Posted on Jun 07, 2008

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1 Answer

Air condition is blowing hot air


low Freon sometimes the front seal on ac compressor goes bad take it to a shop they should have a leak censer to find the leak

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Hey man odds are you have a small fuel leak under the hood probably like a pinhole in a fuel line. When you turn on the ac you are pulling air from the front of the vehicle in turn pulling in the fuel smell. Find and stop the leak and that should get rid of the smell in the cab when the ac is running.

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I have a 2005 kia spectra and when i turn the ac on it is slipping real bad, what is it? I think it is the air conditioning clutch but i dont know for sure! it stops making the noise when i turn the ac off...


I had this problem, the belt was worn out and the bearings in the AC pulley are going bad. Removed the belt to the AC and the problem went away, no AC until I get the replacement.

Nov 25, 2010 | 2005 Kia Spectra

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Air conditioning not too cold ??


Hello,
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Let me explain in layman's terms how the air conditioning (AC) system works and what could be happening to your car.

Like your body, the air conditioning compressor is the heart of the AC system, and Freon is the blood. The compressor pumps Freon throughout the AC system, either the older type R12 which costs as much as gold it seems these days, or the new environmentally-friendly R134A Freon. This Freon is a gas and liquid combination that is compressed and circulated throughout the air conditioning system. The compressed Freon is pushed through the system under pressure and is passed through different sized metal and rubber hoses and a special valve called an expansion valve that cause the gas to expand and contract.

This expansion and contraction makes the Freon gas very cold. This cold gas makes its way via metal lines into the dash area of your vehicle to the evaporator core. This evaporator core is like a small radiator, except it has cold Freon circulating inside and not hot antifreeze. A small fan (the AC blower fan which you control from the control panel on the dash) sits in front of the evaporator core and blows air across this cold evaporator and then through the vents inside your vehicle.

The other objective of the air conditioning system is to remove the heat from inside the cab of the vehicle. This heat is removed by the Freon with the help of the AC condenser located at the front of the car (usually in front of the radiator). The Freon coming back from the evaporator carries the heat from the cab to the condenser via rubber and metal hoses. Just like your radiator, the condenser is lightweight aluminum with many internal winding coils.
The Freon travels through these coils, and in between these coils are small slits or fins that the Freon is forced through. The condenser will have an electric cooling fan mounted in front or behind it to push or pull air through these fins to remove the heat from the Freon. Some vehicles still use the old fashioned fan blade driven by the engine to pull air across the radiator and the condenser.
Now I know that is just a tidbit of information on how the air conditioning system works, and it is very general, but I wanted you to know what to look for to give you insight as to what might be happening with your vehicle.
A few causes of low cooling efficiency or no cooling at all at idle are:

Lack of air flow across the condenser. Make sure the electric cooling fan motor near the condenser is coming on, or in models that are equipped with a fan blade make sure this fan is turning and is turning very fast.

Low Freon levels. Freon level and pressure should be checked by your certified air conditioning mechanic.

Overheating. If the engine is running hot or overheating, it can have a noticeable negative affect on the air conditioning system. Some cars have two electric cooling fans, one for the air conditioning condenser and the other for the radiator. Make sure they are both working properly. Usually at idle on a hot day with the AC on both fans will be on.

When the vehicle is traveling at freeway speeds, the compressor is pumping the Freon throughout the system much faster and harder than at idle. There is a dramatic increase in air flow across the condenser due to 55 mph winds, and the engine is usually operating at a cooler, more efficient temperature as well, thus allowing the air conditioning system to operate efficiently.
Note: An air conditioning system that is somewhat low on Freon can still feel comfortable at freeway speeds due to the added air flow across the condenser which can overcome the ill effects of slightly low Freon. Periodic air conditioning performance checks by your mechanic are the best way to keep the system in great shape.

Hope this helps.

Goodluck

Oct 08, 2010 | 1998 Cadillac DeVille

1 Answer

Air conditioning compressor does not operate


Check the fuse to see that it is still good. It is possible that the compressor is out of freon and can't engage because the level is too low to keep it from burning up.

Check to see if the clutch engages (the small wheel on the face of the pulley) when you turn the switch on and with the motor running.

Look under the hood and if you see black or dark brown stains over the area where the compressor is mounted, you likely have a leak that needs to be fixed.

May 29, 2010 | 1992 Buick Roadmaster

1 Answer

Air condition


Small engine and the load of the AC will cause the engine to have to work harder and feel "slower". Nothing you can do other thatn not have AC on to long!

Nov 25, 2009 | 1995 Honda Civic

2 Answers

Why is the ac air conditioning not cooling


Could be low on freon, could be a bad compressor, could be a bad expansion valve, could be..... Get it checked out to find out for sure.

Jun 20, 2009 | 2001 Nissan Sentra

3 Answers

A/c light blinks


The only problem with your air conditioning light blinking in the 4runner is a bad relay. Toyota has updated the relay to part #90987-02028. Call your local Toyota dealership for this relay. You can buy it at the parts counter. It is about $65. It takes 1 minute to replace. This is the first thing you should do to troubleshoot the AC blinking light. I had the exact same problem with my 2003 4runner and this relay resolved my issue. This same procedure is for the Camry and other Toyota models with the same blinking AC light, but the relay part number might differ.

Apr 04, 2009 | 2004 Toyota 4Runner

1 Answer

Screeching noise, then a/c stops blowing cold air. Still blows air, just not cold air.


it could be the air conditioning clutch going out. to check turn your car on and idle it with ac on and hood open. at the ac compressor it will have a pulley on it with a clutch that engages when the air conditioning is on. if it engages and disengages it can be the clutch itself has gone bad, the ac clutch will also disengage if there is not enough freon in the ac system, will also engage and disengage if the pressure gets too high in the ac system. Depending on the year of the vehicle it will disengage at full throttle and come back on when you are not at full throttle.
If it is a metallic sounding screech for example take a coke can and drag it across pavement kind of sound it could be a bad compressor or a bad ac clutch. If it is a more rubbery sound for example a car spinning its tires kind of noise it could be a loose belt.

1. Check to make sure all belts are tight under hood
2. start car and look at ac compressor to make sure compressor pulley is turning and that the fan clutch is engaged spinning


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